The nonparametric counterpart to the two-sample t-test with independent samples is the:
A) Wilcoxon signed rank test for paired samples.
B) Wilcoxon rank sum test.
C) Wilcoxon signed rank test for one sample.
D) Friedman test for randomized block design.
E) Kruskal-Wallis test.

Question

Quizplus · Accepted Answer

The Wilcoxon rank sum test is the nonparametric equivalent to the two-sample t-test with independent samples. The Wilcoxon signed rank test for paired samples is the nonparametric equivalent for a paired samples t-test. The Wilcoxon signed rank test for one sample is used to analyze a single sample and compare it to a hypothesized median. The Friedman test is used for analyzing randomized block design experiments with three or more groups. The Kruskal-Wallis test is used for comparing three or more independent samples.

The Nonparametric Counterpart to the Two-Sample T-Test with Independent Samples